US20090157303A1 - System and method for multiple delete entry on control display unit - Google Patents
System and method for multiple delete entry on control display unit Download PDFInfo
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- US20090157303A1 US20090157303A1 US12/015,391 US1539108A US2009157303A1 US 20090157303 A1 US20090157303 A1 US 20090157303A1 US 1539108 A US1539108 A US 1539108A US 2009157303 A1 US2009157303 A1 US 2009157303A1
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/003—Flight plan management
- G08G5/0039—Modification of a flight plan
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/0017—Arrangements for implementing traffic-related aircraft activities, e.g. arrangements for generating, displaying, acquiring or managing traffic information
- G08G5/0021—Arrangements for implementing traffic-related aircraft activities, e.g. arrangements for generating, displaying, acquiring or managing traffic information located in the aircraft
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- the present invention relates generally to computer-based-systems used in the navigation of aircraft.
- the Flight Deck Control Display Unit (“CDU”) is an interface system that allows a pilot to monitor and control various other aircraft systems.
- the CDU is the primary interface for the aircraft's Flight Management System (“FMS”), thereby making the CDU the primary system used to enter and display the navigation route for flight.
- FMS Flight Management System
- the CDU is generally not used to enter and display the ground navigation route for taxiing of aircraft because the surface traffic movement does not lend itself to predefined or ‘stored’ taxi routes, taxi route datalink capability does not currently exist, and the manual entry and display of taxi route navigation using the current CDU interface would require many user inputs, which is inefficient. Conventional solutions to this problem have been to develop systems that are completely separate from the CDU.
- modification of navigation route using the current CDU interface can be inefficient.
- Manual modification of navigation route that requires deletion of multiple individual navigation route segments requires many user inputs, which is inefficient. It is desirable to provide a system and method that reduces the number of user inputs required to delete multiple individual navigation route segments.
- a method for modifying navigation information on a control display unit which has at least one entry field and a plurality of display lines includes at least receiving a plurality of delete command entries, receiving a display line selection, determining the number of delete command entries, identifying a navigation route segment displayed in the selected display line, wherein the navigation route segment displayed in the selected display line comprises at least a first navigation route segment, deleting the first navigation route segment, deleting navigation route segments which follow the first navigation route segment in sequential order until the number of deleted navigation route segments equals the number of delete command entries received, and displaying the navigation information.
- a system for modifying navigation information displayed on a control display unit.
- the system has at least a control display unit adapted to display navigation information and receive user inputs comprising at least one entry field and a plurality of display lines, wherein the user can input in the entry field at least a plurality of delete commands and the user can select a display line in which a first navigation route segment is to be deleted.
- the processor is in communication with the control display unit and the processor is adapted to determine the number of delete command entries, delete the first navigation route segment, and delete navigation route segments which follow the first navigation route segment in sequential order until the number of deleted navigation route segments equals the number of delete command entries.
- the processor is also adapted to display the navigation information on the control display unit.
- FIG. 1 is a drawing of a conventional CDU for a commercial aircraft.
- FIG. 2 is a drawing of a CDU display screen with an entry field, a plurality of display lines, and corresponding display line select keys.
- FIGS. 3A through 3D are a series of drawings of CDU display screens that show taxi route entry and display on a CDU according to a conventional method.
- FIG. 4 is a flow diagram illustrating operation of one example of a system and method for receiving and displaying a taxi route on a CDU.
- FIGS. 5A and 5B are a pair of drawings of CDU display screens that show how a taxi route is entered and displayed according to one example of the method disclosed herein.
- FIGS. 6A and 6B are drawings of CDU display screens that show a taxi-out route and a taxi-in route appended to a flight navigation route.
- FIG. 7 is a flow diagram illustrating operation of one example of a system and method for receiving and displaying a taxi route on a CDU.
- FIG. 8 is a drawing of a CDU display screen that shows a taxi route with navigation data displayed adjacent to corresponding taxi route segments.
- FIGS. 9A through 9D are drawings of CDU display screens that show a navigation route modified on a CDU according to a conventional method.
- FIG. 10 is a flow diagram illustrating operation of one example of a system and method for modifying a navigation route on a CDU.
- FIGS. 11A and 11B are drawings of CDU display screens that show one example of a modification to a navigation route.
- a system and method for receiving and displaying a taxi route on a Flight Deck Control Display Unit (“CDU”) of commercial aircraft is provided.
- the system allows the pilot to center and display a taxi route on the CDU in an efficient way. This reduces the potential for pilot error and the need for separate systems in the flight deck that are dedicated to the display of taxi route information, which thereby reduces the training required for pilots who must use such separate systems.
- the CDU is the main interface with the Flight Management System (“FMS”) of the aircraft, it is beneficial to have taxi route and flight route navigation information that is entered, displayed, and controlled on the CDU.
- FMS Flight Management System
- a system and method for modification of navigation route using the CDU is also provided.
- the system and method allows for the efficient manual modification of navigation route which requires deletion of multiple individual navigation route segments. This reduces the potential for pilot error and reduces the number of user inputs required to delete multiple individual navigation route segments.
- the CDU has a display 12 and a keypad 14 .
- Keypad 14 includes CDU page keys, alphanumeric entry keys, and various CDU display function keys.
- Display 12 can have at least one entry field, a plurality of display lines, and a plurality of display line select keys corresponding to display lines.
- the conventional CDU includes twelve display lines and display line select keys, six on the left and six on the right, and are commonly referred to as 1 L through 6 L for the display lines and display line select keys on the left side of the CDU display screen and 1 R through 6 R for the display lines and display line select keys on the right side of the CDU display screen.
- the entry field for conventional CDU is below display line 6 L and is commonly referred to as the SCRATCHPAD.
- the display lines corresponding to their respective display line select keys 1 L through 6 L and 1 R through 6 R are delineated in table form.
- the box to the right of display line select key 1 L will be referred to as display line 1 L and the box to the left of display line select key 1 R will be referred to as display line 1 R.
- the conventional method of entering and displaying route and other information on the CDU requires multiple inputs by the pilot.
- the pilot must first, enter a first taxi route segment into the SCRATCHPAD entry field using the keypad, which in this example is taxi route segment A 6 , and second, press one of the display line select keys in which the first taxi route segment is to be displayed.
- the system would display taxi route segment A 6 in display line 1 R.
- the system would display DIRECT in display line 1 L and taxi route segment A 6 in display line 2 L to show that the aircraft must move from its current position, which is represented by the term DIRECT, to taxi route segment A 6 in order to reach segment A 6 in the taxi route.
- the pilot could have selected line select key 1 L, and A 6 would have displayed in line 1 L.
- the pilot must enter a second taxi route segment into the SCRATCHPAD entry field using the keypad and press the display line select key in which the second taxi route segment is to be displayed. For example, referring to FIG. 3C , if the assigned taxi route is to have taxi route segment B follow taxi route segment A 6 , the pilot would enter B into the SCRATCHPAD entry field using the keypad.
- the pilot would press display line select key 3 L to display taxi route segment B in display line 3 L.
- the system would display taxi route segment B in display line 2 R to show that the aircraft must move via taxi route segment A 6 to taxi route segment B to move along the taxi route.
- this order of entries must be repeated to enter a series of taxi route segments to display a taxiway navigation route on the CDU.
- System 100 running on processor 110 in this example is in the form of a software program used to display a taxiway navigation route on a conventional CDU 10 .
- step 120 a plurality of taxi route segment entries and a display line selection are received from CDU 10 .
- the plurality of taxi route segments can be input into the entry field by several methods of entry, including but not limited to manual keypad entry, manual touch screen entry, verbal entry, datalink entry, and stored and recall entry.
- a delimiter may be manually or automatically input after each taxi route segment to signal that a discrete taxi route segment has been entered.
- the delimiters can be a space entry, a period, a dash, or other symbols, characters, or numbers.
- the system can also be adapted to recognize taxi route segments and automatically insert delimiters upon entry of the discrete taxi route segment.
- the taxi route segments are assigned to separate display lines in the order in which the taxi route segments were received to form a taxiway navigation route.
- the taxiway navigation route is displayed on CDU 10 .
- One example of the operation of the system and method is described below in further detail with reference to FIGS. 5A and 5B .
- the pilot could: first, using the keypad, enter a first taxi route segment, which in this example is taxi route segment A 6 , followed by a second taxi route segment, B; a third taxi route segment, E, a fourth taxi route segment, P, and a fifth taxi route segment, P 1 .
- a first taxi route segment which in this example is taxi route segment A 6 , followed by a second taxi route segment, B; a third taxi route segment, E, a fourth taxi route segment, P, and a fifth taxi route segment, P 1 .
- the pilot presses one of the display line select keys to select which display line the first taxi route segment is to be displayed.
- the system would then automatically assign the taxi route segments to separate display lines in the order in which the taxi route segments were entered.
- FIG. 5B shows where, if line select key 1 R were selected, the system would assign and display the plurality of taxi route segments entered in FIG. 5A to separate display lines in the order the taxi route segments were entered.
- a pilot can enter a plurality of taxi route segments into the SCRATCHPAD entry field and assign and display the taxiway navigation route in nearly half of the inputs required with the conventional method. For example, to enter and display a taxiway navigation route of five taxi route segments using the conventional method, the pilot would have to make at least eleven inputs. Using the method disclosed herein, however, entering the same taxiway navigation route of five taxi route segments would only require seven inputs.
- the number of times the pilot must reach from the keyboard to a line select key and locate a specific line select key is reduced from five to only once. The reduction in number of inputs and number reaches from the keyboard to a line select key is significant. Pilot workload, time, and opportunity for error are all reduced. The net result is an increase in interface efficiency and accuracy.
- FIG. 6A shows one example of a taxi-out navigation route where taxi route segments E, P, and P 1 lead to runway 14 L.
- the flight navigation route begins after runway 14 L with Standard Instrument Departure XYZ (SID) and airway segment Vxxx to WAYPOINT 1 .
- FIG. 6B shows one example of a taxi-in navigation route where the flight navigation route is via airway Vzzz to WAYPOINT 3 and the approach, via APPR TRANS to intercept ILS 14 L, and via ILS 14 L to runway 14 L.
- the taxi-in navigation route begins after the flight navigation route ends with runway 14 L leading to taxi route segments P 1 and P.
- a missed approach route (not shown) may or may not be displayed. If a missed approach is displayed, the taxi route would be appended after the missed approach, and automatically appended to the landing runway when the missed approach is automatically cleared or deleted after landing. If the missed approach is executed and flown, the taxi route may or may not be cleared.
- the system can display navigation data corresponding to the taxi route segments.
- System 200 running on processor 110 in this example is in the form of a software program used to display a taxiway navigation route with navigation data on a conventional CDU 10 .
- Processor 110 is in communication with CDU 10 and Navigation Data System 210 .
- Navigation Data System 210 can be one or several systems that measure, calculate, receive, or store navigation related data.
- Navigation Data System 210 can be an Airport Moving Map application (AMM), a Global Positioning System (GPS), the aircraft's own avionic devices, and all or more of these and related devices and databases.
- AMM Airport Moving Map application
- GPS Global Positioning System
- step 220 a plurality of taxi route segment entries and a display line selection are received from CDU 10 .
- step 230 navigation data corresponding to the taxi route segments is identified and retrieved from Navigation Data System 210 .
- Navigation data can include, for example, the geographic location of points on a taxi route segment, a taxi route-segment heading, a length of the taxi route segment, a distance to an end of the taxi route segment, a time remaining until an end of the taxi route segment is reached, and a speed limit or other limitations.
- Navigation data can also include a navigation instruction which can, for example, instruct the pilot on what action to take on or at the end of a taxi route segment (e.g., stop, hold, cross, turn left, turn right, etc.).
- the navigation data is assigned to the corresponding individual taxi route segments. For example, navigation data corresponding to a first taxi route segment is assigned to the first taxi route segment and navigation data corresponding to a second taxi route segment is assigned to the second taxi route segment.
- the taxi route segments are assigned to separate display lines in the order in which the taxi route segments were received to form a taxiway navigation route.
- the taxiway navigation route is displayed on CDU 10 .
- the navigation data is displayed adjacent to its corresponding taxi route segment. For example, navigation data corresponding to the first taxi route segment is displayed adjacent to the first taxi route segment and the navigation data corresponding to the second taxi route segment is displayed adjacent to the second taxi route segment and so on.
- Display of navigation data adjacent to a taxi route segment can include, for example, displaying navigation data in or above the same display field as the taxi route segments or in the display field to the right of the taxi route segment.
- one way the system can display a taxiway navigation route with corresponding navigation data is to display the taxi route segments along the left display lines with navigation data corresponding to the taxi route segments displayed in, above, or below the respective display lines and in the display lines to the right of the taxi route segment.
- a taxi route segment heading corresponding to taxi route segment A 6 is displayed in the same display line, display line 1 L, as taxi route segment A 6 .
- a length of taxi route segment A 6 , aircraft speed, and time until an end of the taxi route segment is reached can be displayed to the right in display line 1 R.
- the conventional method for modifying navigation information by deleting multiple navigation route segments on the CDU requires multiple inputs by the user.
- the term navigation route segment as used herein includes information used by the pilot to navigate, monitor, and control the aircraft and aircraft systems, including but not limited to flight route segments, taxi route segments, navigation procedures, navigation points, aircraft data, and aircraft functions.
- the pilot to delete a taxi route segments B and E in the taxiway navigation route displayed therein, the pilot must first enter a delete command in the entry field by pressing the delete key on the CDU. As shown in FIG. 9A , a delete command entry will then display in the SCRATCHPAD. Second, the pilot must press display line select key 3 L to delete the taxi route segment B.
- the modified taxiway navigation route is shown in FIG.
- the method and system disclosed herein allows the pilot to enter a plurality of delete commands into the entry field and delete a plurality of sequential navigation route segments with a single display line selection, thereby significantly reducing the number of required inputs.
- a reduction in the number of inputs also reduces the number of times the pilot's hand passes back and forth over the keypad and the display line select keys, thereby reducing input time and the opportunity for pilot error.
- FIG. 10 an example illustration of the operation of system 300 is provided.
- System 300 running on processor 110 in this example is in the form of a software program used to display a navigation route on a conventional CDU 10 .
- step 320 a plurality of delete command entries and a display line selection are received from CDU 10 .
- the plurality of delete commands can be input into the entry field by several methods of entry, including but not limited to a manual keypad entry, manual touch screen entry, verbal entry, datalink entry, and stored and recall entry.
- one or more delimiters can be automatically input after each delete command entry to signal that a discrete delete command has been entered.
- the delimiters can be a space entry, a period, a dash, or other symbols, characters, or numbers.
- the number of delete command entries received is determined.
- the navigation route segment displayed in the display line selected by the pilot is identified.
- the navigation route segment displayed in the selected display line is deleted.
- the navigation route segment displayed in the selected display line can be referred to as the first navigation route segment.
- step 360 navigation route segments which follow the first navigation route segment are deleted in sequential order until the number of deleted navigation route segments equals the number of delete command entries. Therefore, if three delete commands were entered by the pilot and received by the processor, only three sequential navigation route segments would be deleted, starting with the navigation route segment in the display line selected by the pilot. An example is illustrated in greater detail below with reference to FIGS. 11A and 11B . Still referring to FIG. 10 , if the deleted navigation route segments were in, for example, the middle of a navigation route, step 370 appends the navigation route segment that follows the last deleted navigation route segment to the navigation route segment preceding the navigation route segment displayed in the selected display line. Continuity in the navigation route may or may not result. Where a route discontinuity results, additional inputs would be required to provide continuity. In step 380 , the modified navigation route is displayed. In addition, navigation data corresponding to deleted navigation route segments can be deleted along with the deleted navigation route segments.
- FIGS. 11A and 11B one example of the system and method in operation is described. If a pilot chose to delete taxi route segments B, E, and P in the taxiway navigation route shown in FIG. 11A , the pilot would enter multiple delete commands in the entry field by pressing the delete key on the CDU three times. As shown in FIG. 11A , three delete command entries will then display in the SCRATCHPAD. Second, the pilot would press display line select key 3 L to designate taxi route segment B as the first navigation route segment for deletion. The system would then determine that the number of delete command entries is three and identify that the navigation route segment displayed in the selected display line as taxi route segment B.
- taxi route segment B is the first navigation route segment
- taxi route segment A 6 is the navigation route segment preceding the first navigation route segment
- taxi route segment P is the last deleted navigation route segment
- taxi route segment P 1 is the navigation route segment that follows the last deleted navigation route segment.
- the system appends the navigation route segment that follows the last deleted navigation route segment, taxi route segment P 1 , to the navigation route segment preceding the first navigation route segment, taxi route segment A 6 .
Abstract
Description
- This application is a Continuation-In-Part of co-pending patent application entitled SYSTEM AND METHOD FOR ENTRY OF TAXI ROUTE ON CONTROL DISPLAY UNIT, U.S. patent application Ser. No. 11/954,387, filed Dec. 12, 2007.
- The present invention relates generally to computer-based-systems used in the navigation of aircraft.
- The Flight Deck Control Display Unit (“CDU”) is an interface system that allows a pilot to monitor and control various other aircraft systems. The CDU is the primary interface for the aircraft's Flight Management System (“FMS”), thereby making the CDU the primary system used to enter and display the navigation route for flight. However, the CDU is generally not used to enter and display the ground navigation route for taxiing of aircraft because the surface traffic movement does not lend itself to predefined or ‘stored’ taxi routes, taxi route datalink capability does not currently exist, and the manual entry and display of taxi route navigation using the current CDU interface would require many user inputs, which is inefficient. Conventional solutions to this problem have been to develop systems that are completely separate from the CDU. Separate systems are problematic for several reasons, including because they require the pilot to learn how to use such systems, take up valuable space and add complexity in an already crowded and complex flight deck, and federate aircraft navigation interface and display into separate locations and methods. It is desirable to provide a common system and method of aircraft navigation interface and display that utilizes the CDU to integrate taxi and flight routes, is efficient, and minimizes error potential.
- In addition, modification of navigation route using the current CDU interface can be inefficient. Manual modification of navigation route that requires deletion of multiple individual navigation route segments requires many user inputs, which is inefficient. It is desirable to provide a system and method that reduces the number of user inputs required to delete multiple individual navigation route segments.
- A method is provided for modifying navigation information on a control display unit which has at least one entry field and a plurality of display lines. The method includes at least receiving a plurality of delete command entries, receiving a display line selection, determining the number of delete command entries, identifying a navigation route segment displayed in the selected display line, wherein the navigation route segment displayed in the selected display line comprises at least a first navigation route segment, deleting the first navigation route segment, deleting navigation route segments which follow the first navigation route segment in sequential order until the number of deleted navigation route segments equals the number of delete command entries received, and displaying the navigation information.
- A system is also provided for modifying navigation information displayed on a control display unit. The system has at least a control display unit adapted to display navigation information and receive user inputs comprising at least one entry field and a plurality of display lines, wherein the user can input in the entry field at least a plurality of delete commands and the user can select a display line in which a first navigation route segment is to be deleted. The processor is in communication with the control display unit and the processor is adapted to determine the number of delete command entries, delete the first navigation route segment, and delete navigation route segments which follow the first navigation route segment in sequential order until the number of deleted navigation route segments equals the number of delete command entries. The processor is also adapted to display the navigation information on the control display unit.
- The features, functions, and advantages that have been discussed can be achieved independently in various embodiments of the present invention or may be combined in yet other embodiments further details of which can be seen with reference to the following description and drawings.
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FIG. 1 is a drawing of a conventional CDU for a commercial aircraft. -
FIG. 2 is a drawing of a CDU display screen with an entry field, a plurality of display lines, and corresponding display line select keys. -
FIGS. 3A through 3D are a series of drawings of CDU display screens that show taxi route entry and display on a CDU according to a conventional method. -
FIG. 4 is a flow diagram illustrating operation of one example of a system and method for receiving and displaying a taxi route on a CDU. -
FIGS. 5A and 5B are a pair of drawings of CDU display screens that show how a taxi route is entered and displayed according to one example of the method disclosed herein. -
FIGS. 6A and 6B are drawings of CDU display screens that show a taxi-out route and a taxi-in route appended to a flight navigation route. -
FIG. 7 is a flow diagram illustrating operation of one example of a system and method for receiving and displaying a taxi route on a CDU. -
FIG. 8 is a drawing of a CDU display screen that shows a taxi route with navigation data displayed adjacent to corresponding taxi route segments. -
FIGS. 9A through 9D are drawings of CDU display screens that show a navigation route modified on a CDU according to a conventional method. -
FIG. 10 is a flow diagram illustrating operation of one example of a system and method for modifying a navigation route on a CDU. -
FIGS. 11A and 11B are drawings of CDU display screens that show one example of a modification to a navigation route. - A system and method for receiving and displaying a taxi route on a Flight Deck Control Display Unit (“CDU”) of commercial aircraft is provided. The system allows the pilot to center and display a taxi route on the CDU in an efficient way. This reduces the potential for pilot error and the need for separate systems in the flight deck that are dedicated to the display of taxi route information, which thereby reduces the training required for pilots who must use such separate systems. In addition, because the CDU is the main interface with the Flight Management System (“FMS”) of the aircraft, it is beneficial to have taxi route and flight route navigation information that is entered, displayed, and controlled on the CDU.
- In addition, a system and method for modification of navigation route using the CDU is also provided. The system and method allows for the efficient manual modification of navigation route which requires deletion of multiple individual navigation route segments. This reduces the potential for pilot error and reduces the number of user inputs required to delete multiple individual navigation route segments.
- Referring to
FIG. 1 , a drawing of a conventional CDU 10 for commercial aircraft is shown. The CDU has adisplay 12 and akeypad 14. Keypad 14 includes CDU page keys, alphanumeric entry keys, and various CDU display function keys.Display 12 can have at least one entry field, a plurality of display lines, and a plurality of display line select keys corresponding to display lines. The conventional CDU includes twelve display lines and display line select keys, six on the left and six on the right, and are commonly referred to as 1L through 6L for the display lines and display line select keys on the left side of the CDU display screen and 1R through 6R for the display lines and display line select keys on the right side of the CDU display screen. The entry field for conventional CDU is belowdisplay line 6L and is commonly referred to as the SCRATCHPAD. A drawing ofdisplay 12 with cleared display lines and entry field, labeled SCRATCHPAD, is shown inFIG. 2 . To aid the description of the drawings showing examples ofdisplay 12, the display lines corresponding to their respective display line selectkeys 1L through 6L and 1R through 6R are delineated in table form. For example, referring toFIG. 2 , the box to the right of display line selectkey 1L will be referred to asdisplay line 1L and the box to the left of display line selectkey 1R will be referred to asdisplay line 1R. - The conventional method of entering and displaying route and other information on the CDU requires multiple inputs by the pilot. Referring to
FIG. 3A , the pilot must first, enter a first taxi route segment into the SCRATCHPAD entry field using the keypad, which in this example is taxi route segment A6, and second, press one of the display line select keys in which the first taxi route segment is to be displayed. For example, referring to FIG. 3B, if the pilot pressed display line selectkey 1R, the system would display taxi route segment A6 indisplay line 1R. In addition, the system would display DIRECT indisplay line 1L and taxi route segment A6 indisplay line 2L to show that the aircraft must move from its current position, which is represented by the term DIRECT, to taxi route segment A6 in order to reach segment A6 in the taxi route. Alternatively, the pilot could have selected line selectkey 1L, and A6 would have displayed inline 1L. To continue to enter the taxi route, the pilot must enter a second taxi route segment into the SCRATCHPAD entry field using the keypad and press the display line select key in which the second taxi route segment is to be displayed. For example, referring toFIG. 3C , if the assigned taxi route is to have taxi route segment B follow taxi route segment A6, the pilot would enter B into the SCRATCHPAD entry field using the keypad. Then, referring toFIG. 3D , the pilot would press display line select key 3L to display taxi route segment B indisplay line 3L. In addition, the system would display taxi route segment B indisplay line 2R to show that the aircraft must move via taxi route segment A6 to taxi route segment B to move along the taxi route. For the conventional method and system, this order of entries must be repeated to enter a series of taxi route segments to display a taxiway navigation route on the CDU. - The method and system disclosed herein, on the other hand, allows the pilot to enter a plurality of taxi route segments into the SCRATCHPAD entry field and display a taxiway navigation route with a single display line selection, thereby using a significantly less number of inputs. Referring to
FIG. 4 , an example illustration of the operation ofsystem 100 is provided.System 100 running onprocessor 110 in this example is in the form of a software program used to display a taxiway navigation route on aconventional CDU 10. Instep 120, a plurality of taxi route segment entries and a display line selection are received fromCDU 10. The plurality of taxi route segments can be input into the entry field by several methods of entry, including but not limited to manual keypad entry, manual touch screen entry, verbal entry, datalink entry, and stored and recall entry. In addition, a delimiter may be manually or automatically input after each taxi route segment to signal that a discrete taxi route segment has been entered. The delimiters can be a space entry, a period, a dash, or other symbols, characters, or numbers. The system can also be adapted to recognize taxi route segments and automatically insert delimiters upon entry of the discrete taxi route segment. Instep 130, the taxi route segments are assigned to separate display lines in the order in which the taxi route segments were received to form a taxiway navigation route. Instep 140, the taxiway navigation route is displayed onCDU 10. One example of the operation of the system and method is described below in further detail with reference toFIGS. 5A and 5B . - Referring to
FIG. 5A , the pilot could: first, using the keypad, enter a first taxi route segment, which in this example is taxi route segment A6, followed by a second taxi route segment, B; a third taxi route segment, E, a fourth taxi route segment, P, and a fifth taxi route segment, P1. As each segment is keyed, it is displayed in the SCRATCHPAD entry field. Then, second, the pilot presses one of the display line select keys to select which display line the first taxi route segment is to be displayed. The system would then automatically assign the taxi route segments to separate display lines in the order in which the taxi route segments were entered.FIG. 5B shows where, if line select key 1R were selected, the system would assign and display the plurality of taxi route segments entered inFIG. 5A to separate display lines in the order the taxi route segments were entered. - Therefore, a pilot can enter a plurality of taxi route segments into the SCRATCHPAD entry field and assign and display the taxiway navigation route in nearly half of the inputs required with the conventional method. For example, to enter and display a taxiway navigation route of five taxi route segments using the conventional method, the pilot would have to make at least eleven inputs. Using the method disclosed herein, however, entering the same taxiway navigation route of five taxi route segments would only require seven inputs. In addition, the number of times the pilot must reach from the keyboard to a line select key and locate a specific line select key is reduced from five to only once. The reduction in number of inputs and number reaches from the keyboard to a line select key is significant. Pilot workload, time, and opportunity for error are all reduced. The net result is an increase in interface efficiency and accuracy.
- In addition, referring to
FIGS. 6A and 6B , the taxiway navigation route can be appended to the flight navigation route.FIG. 6A shows one example of a taxi-out navigation route where taxi route segments E, P, and P1 lead torunway 14L. The flight navigation route begins afterrunway 14L with Standard Instrument Departure XYZ (SID) and airway segment Vxxx to WAYPOINT1.FIG. 6B shows one example of a taxi-in navigation route where the flight navigation route is via airway Vzzz to WAYPOINT3 and the approach, via APPR TRANS to interceptILS 14L, and viaILS 14L torunway 14L. The taxi-in navigation route begins after the flight navigation route ends withrunway 14L leading to taxi route segments P1 and P. A missed approach route (not shown) may or may not be displayed. If a missed approach is displayed, the taxi route would be appended after the missed approach, and automatically appended to the landing runway when the missed approach is automatically cleared or deleted after landing. If the missed approach is executed and flown, the taxi route may or may not be cleared. - In another example, the system can display navigation data corresponding to the taxi route segments. Referring to
FIG. 7 , an example illustration of the operation ofsystem 200 running onprocessor 110 is provided.System 200 running onprocessor 110 in this example is in the form of a software program used to display a taxiway navigation route with navigation data on aconventional CDU 10.Processor 110 is in communication withCDU 10 andNavigation Data System 210.Navigation Data System 210 can be one or several systems that measure, calculate, receive, or store navigation related data. For example,Navigation Data System 210 can be an Airport Moving Map application (AMM), a Global Positioning System (GPS), the aircraft's own avionic devices, and all or more of these and related devices and databases. Instep 220, a plurality of taxi route segment entries and a display line selection are received fromCDU 10. Instep 230, navigation data corresponding to the taxi route segments is identified and retrieved fromNavigation Data System 210. Navigation data can include, for example, the geographic location of points on a taxi route segment, a taxi route-segment heading, a length of the taxi route segment, a distance to an end of the taxi route segment, a time remaining until an end of the taxi route segment is reached, and a speed limit or other limitations. Navigation data can also include a navigation instruction which can, for example, instruct the pilot on what action to take on or at the end of a taxi route segment (e.g., stop, hold, cross, turn left, turn right, etc.). Instep 240, the navigation data is assigned to the corresponding individual taxi route segments. For example, navigation data corresponding to a first taxi route segment is assigned to the first taxi route segment and navigation data corresponding to a second taxi route segment is assigned to the second taxi route segment. Instep 250, the taxi route segments are assigned to separate display lines in the order in which the taxi route segments were received to form a taxiway navigation route. Instep 260, the taxiway navigation route is displayed onCDU 10. Instep 270, the navigation data is displayed adjacent to its corresponding taxi route segment. For example, navigation data corresponding to the first taxi route segment is displayed adjacent to the first taxi route segment and the navigation data corresponding to the second taxi route segment is displayed adjacent to the second taxi route segment and so on. Display of navigation data adjacent to a taxi route segment can include, for example, displaying navigation data in or above the same display field as the taxi route segments or in the display field to the right of the taxi route segment. For example, referring toFIG. 8 , one way the system can display a taxiway navigation route with corresponding navigation data is to display the taxi route segments along the left display lines with navigation data corresponding to the taxi route segments displayed in, above, or below the respective display lines and in the display lines to the right of the taxi route segment. In the example inFIG. 8 , a taxi route segment heading corresponding to taxi route segment A6 is displayed in the same display line,display line 1L, as taxi route segment A6. In addition, a length of taxi route segment A6, aircraft speed, and time until an end of the taxi route segment is reached can be displayed to the right indisplay line 1R. - The conventional method for modifying navigation information by deleting multiple navigation route segments on the CDU requires multiple inputs by the user. The term navigation route segment as used herein includes information used by the pilot to navigate, monitor, and control the aircraft and aircraft systems, including but not limited to flight route segments, taxi route segments, navigation procedures, navigation points, aircraft data, and aircraft functions. For example, referring to
FIG. 9A , to delete a taxi route segments B and E in the taxiway navigation route displayed therein, the pilot must first enter a delete command in the entry field by pressing the delete key on the CDU. As shown inFIG. 9A , a delete command entry will then display in the SCRATCHPAD. Second, the pilot must press display line select key 3L to delete the taxi route segment B. The modified taxiway navigation route is shown inFIG. 9B . Third, the pilot must enter another delete command in the entry field by pressing the delete key. As shown inFIG. 9C , a delete command entry will again display in the SCRATCHPAD. Forth, the pilot must then again press display line select key 3L to delete the taxi route segment E, resulting in the modified taxiway navigation route show inFIG. 9D . This process of pressing the delete key and then pressing the display line select key corresponding to the navigation route segment must be repeated for each and every navigation route segment that the pilot wants to delete. - The method and system disclosed herein, on the other hand, allows the pilot to enter a plurality of delete commands into the entry field and delete a plurality of sequential navigation route segments with a single display line selection, thereby significantly reducing the number of required inputs. A reduction in the number of inputs also reduces the number of times the pilot's hand passes back and forth over the keypad and the display line select keys, thereby reducing input time and the opportunity for pilot error. Referring to
FIG. 10 , an example illustration of the operation ofsystem 300 is provided.System 300 running onprocessor 110 in this example is in the form of a software program used to display a navigation route on aconventional CDU 10. Instep 320, a plurality of delete command entries and a display line selection are received fromCDU 10. The plurality of delete commands can be input into the entry field by several methods of entry, including but not limited to a manual keypad entry, manual touch screen entry, verbal entry, datalink entry, and stored and recall entry. In addition, one or more delimiters can be automatically input after each delete command entry to signal that a discrete delete command has been entered. The delimiters can be a space entry, a period, a dash, or other symbols, characters, or numbers. Instep 330, the number of delete command entries received is determined. Instep 340, the navigation route segment displayed in the display line selected by the pilot is identified. Instep 350, the navigation route segment displayed in the selected display line is deleted. The navigation route segment displayed in the selected display line can be referred to as the first navigation route segment. Instep 360, navigation route segments which follow the first navigation route segment are deleted in sequential order until the number of deleted navigation route segments equals the number of delete command entries. Therefore, if three delete commands were entered by the pilot and received by the processor, only three sequential navigation route segments would be deleted, starting with the navigation route segment in the display line selected by the pilot. An example is illustrated in greater detail below with reference toFIGS. 11A and 11B . Still referring toFIG. 10 , if the deleted navigation route segments were in, for example, the middle of a navigation route, step 370 appends the navigation route segment that follows the last deleted navigation route segment to the navigation route segment preceding the navigation route segment displayed in the selected display line. Continuity in the navigation route may or may not result. Where a route discontinuity results, additional inputs would be required to provide continuity. Instep 380, the modified navigation route is displayed. In addition, navigation data corresponding to deleted navigation route segments can be deleted along with the deleted navigation route segments. - Referring to
FIGS. 11A and 11B , one example of the system and method in operation is described. If a pilot chose to delete taxi route segments B, E, and P in the taxiway navigation route shown inFIG. 11A , the pilot would enter multiple delete commands in the entry field by pressing the delete key on the CDU three times. As shown inFIG. 11A , three delete command entries will then display in the SCRATCHPAD. Second, the pilot would press display line select key 3L to designate taxi route segment B as the first navigation route segment for deletion. The system would then determine that the number of delete command entries is three and identify that the navigation route segment displayed in the selected display line as taxi route segment B. Then, the system would delete taxi route segment B and delete navigation route segments which follow taxi route segment B in sequential order until the number of deleted navigation route segments equal the number of delete command entries. In this case, because taxi route segments E and P are the two navigation route segments that follow taxi route segment B in sequential order they are deleted, resulting in a total of three deleted navigation route segments. In this example, taxi route segment B is the first navigation route segment, taxi route segment A6 is the navigation route segment preceding the first navigation route segment, taxi route segment P is the last deleted navigation route segment, and taxi route segment P1 is the navigation route segment that follows the last deleted navigation route segment. Referring toFIG. 11B , in the example, the system appends the navigation route segment that follows the last deleted navigation route segment, taxi route segment P1, to the navigation route segment preceding the first navigation route segment, taxi route segment A6. - The foregoing description of the preferred embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the precise forms disclosed. The descriptions were selected to best explain the principles of the invention and their practical application to enable others skilled in the art to best utilize the invention in various embodiments and various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention not be limited by the specification, but be defined by the claims set forth below.
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US11/954,387 US8428872B2 (en) | 2007-12-12 | 2007-12-12 | System and method for entry of taxi route on control display unit |
US12/015,391 US8560239B2 (en) | 2007-12-12 | 2008-01-16 | System and method for multiple delete entry on control display unit |
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